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Hydrophilic polyvinylidene fluoride microporous filter membrane PVDF membrane 47 50 60mm pore size 0.22/0.45um

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SDI Pollution Index Meter F1-47 HVI QZDY Admeasuring Apparatus RO Portable FI The Test of Membrane 0.45um Fluoroplastic

SDI Pollution index meter F1-47 HVI QZDY admeasuring apparatus RO Portable FI The test of membrane 0.45um Fluoroplastic

SDI Pollution Index Meter F1-47 HVI QZDY Admeasuring Apparatus RO Portable FI The Test of Membrane 0.45um Fluoroplastic

SDI Pollution Index Meter F1-47 HVI QZDY Admeasuring Apparatus RO Portable FI The Test of Membrane 0.45um Fluoroplastic

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